AI Prompt Token & Text Sanitizer
Paste any text, strip junk formatting, and get a clean, token-counted block ready to drop into a prompt, JSON wrapper, or string variable.
# Welcome to the Sanitizer Paste **messy** text with [links](https://example.com), <p>HTML</p>, and "quotes" — clean it up in one click.
Why Traditional Word Counters Break Your AI Prompts
Pasting text straight from Google Docs, Notion, or web pages leaves hidden formatting tokens in your clipboard — markdown syntax, HTML tags, invisible Unicode characters, and stray double spaces. When you drop that raw text directly into an LLM prompt, the model does not ignore the debris. It wastes valuable attention heads trying to parse asterisks, brackets, and broken markup instead of focusing on your actual instructions. The result is lower-quality outputs, confused reasoning, and burned tokens on syntax cleanup rather than task execution. A purpose-built prompt sanitizer strips that noise at the source so the model receives only the signal you intended.
The Math Under the Hood: Words vs. Tokens
Most writers think in words, but large language models think in tokens. Understanding the difference is the first step toward serious prompt engineering. Below is a quick reference for how we calculate the metrics you see in the panel above.
| Metric | Calculation Heuristic | Why It Matters to Prompt Engineering |
|---|---|---|
| Character Count | Native string length | The fundamental boundary for API payloads and system restrictions. |
| Word Count | Split on whitespace regex | Ideal for auditing the length of generated articles or essays. |
| Estimated Tokens | Characters ÷ 4 | Translates raw English text into the numeric chunks models actually read. |
Frequently Asked Questions
- Does this tool save my prompt data?
- No. The tool runs 100% locally inside your browser via client-side JavaScript. Your proprietary prompts and data never touch an external server or API.
- Why should I escape quotes before prompting?
- If you are embedding variable text inside an API JSON payload or a programmatically orchestrated prompt, unescaped quotes break string definitions and crash your script.